/**
 * Copyright (c) 1997-2013, www.tinygroup.org (luo_guo@icloud.com).
 * <p>
 * Licensed under the GPL, Version 3.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.gnu.org/licenses/gpl.html
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.tinygroup.tinysqldsl.formitem;

import org.tinygroup.tinysqldsl.base.Alias;
import org.tinygroup.tinysqldsl.base.FragmentSql;
import org.tinygroup.tinysqldsl.base.StatementSqlBuilder;

/**
 * fromitem的sql片段，允许加入SQL字符串片断
 *
 * @author renhui
 */
public class FragmentFromItemSql extends FragmentSql implements FromItem {

    private Alias alias;

    public FragmentFromItemSql(String fragment, Alias alias) {
        super(fragment);
        this.alias = alias;
    }

    public FragmentFromItemSql(String fragment) {
        super(fragment);
    }

    public Alias getAlias() {
        return alias;
    }

    public void setAlias(Alias alias) {
        this.alias = alias;
    }

    @Override
    public String toString() {
        return getFragment() + ((alias != null) ? alias.toString() : "");
    }

    public void builderFromItem(StatementSqlBuilder builder) {
        builder.appendSql(toString());
    }

}
